Perhaps a plotline where the magic of Avalon gives Harry unique abilities to combat the dark forces in ways that are different from the original series. For example, he might be able to use ancient Avalon spells that are more powerful than normal magic. This could lead to some really exciting battles and new strategies against Voldemort.
One interesting plotline could be the exploration of the main character's newfound heritage as the heir of Avalon. This might involve them discovering ancient magic and secrets related to Avalon. Another could be their interactions with existing Harry Potter characters in a new light, like how they might change the dynamics within Hogwarts or in the fight against Voldemort.
Perhaps in this fanfiction, Draco Malfoy has a change of heart and is revealed to be the one who can truly end the dark reign. He might be in a unique position to infiltrate the Death Eaters due to his family's connections, and then use that knowledge to turn the tables on Voldemort. His Slytherin cunning could be used for good in this alternative scenario.
Well, Harry Potter is obviously one of the main characters. Since it's a fanfiction related to him being the 'Chosen of Avalon', he would be central to the story.
Another aspect could be the re - imagining of the wizarding society in Avalon. It might have different traditions, laws, and social hierarchies that make for an exciting read. For example, how magic is taught and regulated there could be very different from what we know in the main Harry Potter story.
One interesting plotline could be Harry having unique magical abilities that are even more powerful than in the original books. For example, he might be able to control time in ways not seen before.
One interesting storyline could be Harry Potter using his magical skills in the world of King of Avalon in unique ways. For example, he might use spells to enhance the defenses of his kingdom or to communicate with magical creatures in Avalon that are similar to those in the wizarding world. Another could be his interactions with the local rulers and warriors, teaching them some basic magic for self - defense.
One interesting plot could be that Harry discovers new, hidden magical abilities that are not mentioned in the original books. This could give him an edge in fighting the Dark Arts and change the course of his battles.
One interesting fanfiction could be about a new student who is chosen for a special magic task that even Harry Potter didn't get to do. Maybe it involves time - traveling magic in a way that changes the course of Hogwarts' history slightly.
Well, some might involve magical creatures with furry characteristics in new adventures at Hogwarts. For example, a werewolf character could have a unique story arc that intersects with the main Harry Potter plot. Maybe they are trying to find a cure or dealing with the prejudice within the wizarding world in a different way than what's in the original books.
One possible plotline could be a comical take on baby Harry's magical mishaps. Maybe he accidentally makes his diapers levitate or turns his crib into a mini Hogwarts. Another could be about how the other characters like Hagrid or Dumbledore interact with baby Harry in this unique situation, perhaps trying to figure out how to handle his early magical outbursts while he's still in diapers.